我和你隔着一条叫时间的河
[wŏ hé nĭ gé zhe yī tiáo jiào shí jiān de hé]
Directly translating to 'I and You Are Separated by a River Called Time', expressing the gap between two people due to passage of time. It can imply that although two people may once know each other well or feel closely connected, now due to the passing of time, there is a huge change, either physically or mentally, which results in a certain distance.